我如何從一個sql數據庫的一列填充一個php數組？

Question

可以說我有一個叫做「pcode」的mysql數據庫，只有一個表，叫做「uk_postcodes」，我想只用第一列填充我的數組，名爲「postcodes」。什麼是從下面的代碼丟失：

//link to mysql server 
    $link = mysql_connect('localhost', 'root', 'root'); 
    mysql_select_db('pcode'); 

    $sql = "SELECT * FROM `ukpostcodes`"; 
    $query = mysql_query($sql); 

$var = array(); 

Answer 1

$sql = "SELECT postcodes FROM ukpostcodes"; 
$result = mysql_query($sql); 

$var = array(); 
while ($row = mysql_fetch_array($result)) { 
    $var[] = $row['postcodes']; 
}